DHT22 (AM2302) Temperature & Humidity Sensor Module

The DHT22 is the upgrade from the DHT11: it measures −40 to 80 °C with ±0.5 °C accuracy and the full 0–100 % humidity range with ±2 % accuracy, using a single data wire. Mounted on a breakout with its pull-up resistor, it connects straight to an Arduino, ESP32 or Raspberry Pi and is supported by the Adafruit DHT library, ESPHome and Home Assistant.

Key features

• −40 to 80 °C (±0.5 °C) and 0–100 % RH (±2 %)
• Single-wire digital output — no ADC needed
• Module with pull-up resistor, 3-pin header
• Works from 3.3 V or 5 V

Specifications

What's in the box

• 1 × DHT22 sensor module
• Connection cable (where supplied)

Ideal for

• Weather stations
• Greenhouse and incubator control
• Smart-home climate monitoring

Good to know

• Do not read it more often than every 2 seconds.